Improved fuenituke-oastee



j @uitrit gisten getest @met JOHN W. HEWITT AND GEORGE E. LYNCH, OE-ALLEGHENY CITY, PENN.- SYLVANIA,

Letters Patent No. 79,571; dated T1/.ly 7, 1868.

IMPROVED FURNITURE-CASTER.

TO ALL WHOM IT 'MAY CONCERN:

Be it-known that we, JOHN W. Hnwrrr and GEORGE R. LYNeH, of the city andcounty of Allegheny, and State ef Pennsylvania, have invented certainnew and useful Improvements in Adjustable Casters forFurniture,Sewing-Machines, &c., of `which the following is a full, clear, andexact description, reference being had to the accompanying drawingswhich make part of this specification, and in which- Figure 1 representsa side view of the table of a sewing-machine with our improvementattached.

Figure 2 an end viev of the same, showing'the feet of the frame restingon the 'loor, and

Figure 3 a similar view, in which the feet of thefrarne are shown aselevated from the ocr, and the casterwheels resting thereon.

The object of our invention is to provide a device by which `furniture,sewing-machines, &c., canA be set solid on the floor, or placed atpleasure upon casters, so as to be easily moved about, to which end ourimprovements consist in mounting the easter-wheels in the lower ends ofelongated vertical supports, passing through fixed guides attached tothe legs of the frame, which are raised from the iloor when desired, bycams pivotcd upon them, and Operated by levers and connecting-links, soas to press upon the tops ofthe 'caster-wheel supports, and therebyraise the frame from the loor, as hereinafter more fully described.Y

In the accompanying drawings, which show a convenient arrangementofparts for carrying out the objects of our. invention, B represents thetable of a sewing-machine, which is supported by a frame or frames, A,provided with legs S, to each of which a caster-wheel is connected. C Crepresent thc caster-wheels, which are mounted in suitable bearings inthe lower ends of the elongated vertical supports-D. These supports passthrough fixed guides Eyupon the legs of the frame, the guides beingeither cast thereon or attached by bolts or screws, as may be preferred.An cccentric-eam,iG, is pivoted-u-poneach leg of the frame above thecasterwheel support D. At each end of the table, the two cams which arepivotcd to its legs are connected by a link or rod, I, and one cam ofeach pair is provided wth a lever, by means of which the two cams arerotated. The cams G are made with suiiicient throw to elevate the frameas far as may be necessary from the door, and rotate upon bearings Jupon the legs S, having their peripherics resting upon the tops ofthesupports D,`and being set in such rclativeposition thereto, that whenrotated by moving the levers R downward, their full part' or swellpresses upon the tops of the support, and thereby raises the frame fromthe door, causing it to rest upon the caster-wheels C, through theintermediation of thespports D and cams G. By raising the levers R thefull part'of the cams is withdrawn from the supports D, and the legs Slowered so as to restsolid upon the loor. The stop-pins K prevent thefurther motions of the' cams, when the legs have been lowered so as tovrest firmly upon'the door. I

It willybe seen that our improvement is readily applicable to articlesof furniture, billiard-tables, sewingmachines, ttc., enabling the sameto be easily moved or set firmly in position, as desired. I

Having thus fully described our invention, what we claim therein. asnew, and desire to secure by Letters Patent, is. e

The combination of the eccentric-cams`G and connecting-links I with thesupports D, guides E, wheels G, and frame-legs S, when arranged andoperating as and for the purpose set forth.

JOHN w. HEWITT, i GEORGE E. LYNCH.

Witnesses:

PERGEVAL BECKETT, ROBERT HEWITT

